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Vol 148 No 2
Pages:
71-76
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Research article
Without section

Model of the granulometric composition of the fractured mined rock at the edge

Authors:
M. G. Menzhulin1
G. P. Paramonov2
S. V. Khokhlov3
About authors
  • 1 — St. Petersburg State Mining Institute
  • 2 — St. Petersburg State Mining Institute
  • 3 — St. Petersburg State Mining Institute
Date submitted:
2000-07-12
Date accepted:
2000-08-23
Date published:
2001-02-01

Abstract

The formation of the structure of the chipping zone can be investigated using the method proposed by B.V. Zamyshlyaev to determine the structure of the cavitation layer during explosion of explosives in water near the free surface. The method is based on the use of the laws of disintegration of an arbitrary discontinuity during the interaction of a stress wave with a free surface. As a result of the interaction, a shock wave will propagate in the air, and a rarefaction wave will propagate along the condensed medium from the interface toward the explosion chamber. The maximum tensile stress in the rarefaction wave is determined by the method of mirroring the explosion source with the introduction of an imaginary charge.

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References

  1. Барон Л. И. Горнотехнологическое лородоведение. М.: Наука, J 977.
  2. Боровиков В.А. Закономерности затухания волны напряжений при прохождении через трещину // Взрывное дело. 1983. Вып. 85/42.
  3. Боровиков В.А. Техника и технология взрывных работ / В.А.Боровиков, И.Ф.Ванягин; Ленинградский горный ин-т. Л., 1985.
  4. Боровиков В.А. Волны напряжений в обводненном трещиноватом массиве / В.А.Боровиков, И.Ф.Ванягин. М.Г.Менжулин, С.В.Цирель; Ленинградский горный ин-т. Л., 1989.
  5. Замышляев Б.В. Динамические нагрузки при подводном взрыве / Б.В.Замышляев, Ю.С.Яковлев. Л.: Судпромгиз, 1967.
  6. Куксенко В.М. Микромеханика разрушения полимерных материалов: Автореф. докт. дис. / ИВС АН СССР. Л., 1977.
  7. Чертков В.Я. Научные основы прогноза и регулирования взорванной горной массы на карьерах: Автореф. докт. дис. / ИВС АН СССР. М., 1990.
  8. Hudson J.A. Discontinuities and Rock Mass Geometry / J.A.Hudson, S.D. Priest 11 International Journal of Rock Mechanics & Mining Sciences & Geomechanical Abstracts. 1979. Vol.16. № 6.

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